74190 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL
74190PC Synchronous Up/Down Counter
74191 Synchronous 4-Bit Up/Down Counter with Mode Control
74191-0002 High Speed Edgecard Connector Ground Signal Format High Performance Applications
74191-0003 High Speed Edgecard Connector Ground Signal Format High Performance Applications
74191-0004 High Speed Edgecard Connector Ground Signal Format High Performance Applications
74191-0005 High Speed Edgecard Connector Ground Signal Format High Performance Applications
74191-0007 High Speed Edgecard Connector Ground Signal Format High Performance Applications
74191DC Synchronous Up/Down Counter
74191PC Synchronous Up/Down Counter
74192 SYNCHRONOUS UP/DOWN DECADE(,BINARY) COUNTER
74192DC Synchronous Up/Down Counter
74192PC Synchronous Up/Down Counter
74193 Synchronous 4-Bit Binary Counter with Dual Clock
74193DC Synchronous Up/Down Counter